Tuff Country 16720 - GM 73-87 6 3/4 ton box kit - Manual (Page 5)

14. Locate the new front shocks. Special note: New longer
front shocks are needed after this suspension system
has been installed and the front shocks need to be
ordered as a separate part #. If you have not already
ordered your new front shocks, please feel free to con-
tact Tuff Country or your local Tuff Country dealer and
order your new front shocks. Tuff Country recommends
installing a 23” fully extended nitrogen gas shock in the
front. Working on the new shocks, install the new bushings
and proper sleeves that are packaged with the new shocks
into each eyelet of the new shocks. Special note: Make
sure to use a lithium or moly base grease prior to
installing the new bushings and sleeves into the eyelets
of the new shocks. This will help with the life of the
bushings as well as prevent squeaking.
15. Locate the stock upper and lower shock mounting hard-
ware. Working on the driver side, install the new shocks into
the stock location using the stock upper and lower hardware.
Make sure to use thread locker or loctite and torque both the
upper and lower hardware to 65 ft lbs. Repeat procedure on
the passenger side. Special note: Tuff Country highly rec-
ommends installing shock boots onto the new shocks. If
shocks boots are not installed, damage may occur to the
piston of the new shock. If you have not already ordered
your new shocks boots, please contact Tuff Country or
your local Tuff Country dealer and order some new
shock boots. Tuff Country offers, dark blue, light blue,
gray, black, red or yellow shock boots.
16. Locate the new front brake line extension brackets, (2)
5/16” x 1” bolt, (4) 1/4” USS flat washers and (2) 5/16” uni-
torque nuts from hardware bag GMBL. Special note: The
front brake line extension brackets are the larger brack-
et in the bag. Working on the driver side, disconnect the
stock front brake lines from each other. Special note: Brake
fluid will leak out so make sure to have something under
the stock brake lines to catch brake fluid. Install (1) front
brake line relocation bracket into the stock hole on the stock
frame rail using the new 5/16” x 1” bolt and hardware. Make
sure to use thread lock-
er or loctite and torque
to 12 ft lbs. Now pull
the stock brake lines
down under the frame
rail and install them
back together to the
newly installed brake
line relocation bracket.
Repeat procedure on
the passenger side.
Special note: After the front and rear installation has
been complete.Tuff Country recommends filling up the
brake fluid reservoir with proper brake fluid and then
with a help from a buddy, bleed the brake lines.
17. Remove both hydraulic floor jacks from under the vehi-
cle.
Tuff Country recommends installing an after market
steering arm once this suspension system has been
installed. If you have not already ordered you new steer-
ing arm, please contact Tuff Country or your local Tuff
Country dealer and order the new steering arm. Part #
for the new steering arm is 70100 (old part # is CSA).
18. Working on the driver side, remove the stock drag link
cotter pin and hardware that connects the stock drag link to
the stock steering arm. Save the stock castle nut but the
stock cotter pin may be discarded.
19. Working on the driver side, remove the (3) stock nuts that
connects the stock steering arm into the stock location. The
stock hardware may be discarded.
20. Working on the driver side, remove the stock steering
arm from the stock location. Special note: There are cone
washers that are around the stock studs. To make
remove easier, these cone washers should be removed
first. Remove and save the (3) cone washers.
21. Locate the new steering arm. Install the new steering
arm to the (3) stock studs. Install the (3) stock cone washers
then using the (3) new 9/16” unitorque nuts that were pack-
aged with the new steering arm, secure the new steering
arm to the stock location. Make sure to add some thread
locker or loctite and torque to 115 ft lbs.
22. Locate the stock drag link castle nut. Install the stock
drag link to the newly installed steering arm and secure
using the stock castle nut. Make sure to use thread locker or